TWI379868B - - Google Patents

Description

1379868 (1) IX. Description of the invention [Technical field to which the invention pertains]

The present invention relates to a room temperature hardening type polyoxymethylene rubber composition for the purpose of protecting electrical ♦ electronic parts. In particular, it is composed of a poly-xylene rubber for electrical and electronic parts protection for preventing or delaying the corrosion of electrical and electronic components, particularly silver-containing precision electronic components such as silver electrodes or silver chip resistors. And the installation of circuit boards, silver electrodes and silver chip resistors. [Prior Art]

In the past, electrical and electronic parts were exposed to sulfur-containing gases (sulfur gas, sub-products) for the purpose of preventing/delaying the corrosion of electrical and electronic parts that are used for the sealing and sealing of electrical and electronic parts. In the case of sulfuric acid gas or the like, the conventional polyoxyxene rubber cannot prevent/delay the passage of the sulfur-containing gas to the electric/electronic parts, and in particular, the corrosion prevention/delay effect of the corrosion of the metal parts cannot be obtained. In addition, in recent years, each device of precision electronic components has been miniaturized and reduced in electric power, and the material of the electrode or the chip resistor has been changed from copper to silver, and the thickness of the electrode has proceeded toward the thinning direction, and the gap between the electrodes has also been narrowed. Development, further susceptible to corrosion of sulfur-containing gases. In JP-A-2003-096301 (Patent Document 1) and JP-A-2005-1 1 3 1 1 (Patent Document 2), it is easy to vulcanize by adding a sulfur-containing gas to the polyoxyethylene rubber composition. Metal powder 0.5~90% by mass', adding 0.01~0.5% by mass of electrical. Electronic parts for sealing or sealing (2) 137.9868

A polyoxyxene rubber composition that prevents or delays the proposal for sulfur-containing gases to reach electrical and electronic components. As described above, in the case where the polyfluorene rubber composition is filled with the metal powder, a part of the metal powder may be agglomerated; thereby, there is a fear that the short circuit between the electrodes and the insulation resistance decrease. Further, when the amount of metal powder added is small, there is a disadvantage that the effect cannot be sustained. Further, since the density of the polyoxyxene rubber composition differs from that of the metal powder, there is a problem that the metal powder settles in the case of long-term storage, and it is impossible to develop a low-viscosity coating polyoxymethylene rubber composition. In addition, when benzotriazole or a derivative thereof is added to a polyoxyxene rubber composition, it is possible to suppress corrosion of electrical and electronic parts of a sulfur-containing compound, The proposal for mobile galvanic erosion. The compound having an aromatic amine group has a low amine group activity, and the effect of suppressing corrosion and movement of the electrical and electronic parts containing the sulfur compound is small.

Patent Document 1: Japanese Laid-Open Patent Publication No. Hei. No. Hei. No. Hei. No. 2005-113115. The above problems are provided to prevent or delay the corrosion of electrical and electronic parts containing sulfur gas, the short circuit between electrodes, or the reduction of insulation resistance in electrical and electronic parts sealed or sealed by polyoxyethylene rubber. The electrical and electronic parts protection (enclosure, sealing) is made of a room temperature hardened polyoxymethylene rubber composition and a 6-(3)1379868 resistor for mounting circuit boards, silver electrodes and silver wafers. [Resolution of the subject]

In order to achieve the above object, the inventors of the present invention have found that a non-aromatic amine-based compound, preferably one molecule, is added to the room temperature hardening type polyoxymethylene rubber composition. a hardened substance containing at least two amine groups containing a non-aromatic amine compound, more preferably a non-aromatic amine group containing at least one primary amine group and at least one multistage amine group in one molecule, sealed or sealed In the case of electrical and electronic parts, especially silver or silver wafer resistors, the amine compound in the hardened material has the specific effect of preventing or delaying the uranium of the electrical and electronic parts, thereby obtaining a short circuit or insulation between the electrodes. The present invention has been completed in electrical and electronic parts with reduced resistance. Accordingly, the present invention provides a room temperature hardening polyxanthene rubber composition characterized by comprising:

(A) 100 parts by mass of the organic polyoxane shown in the following general formula (1) (B) an organic hydrazine compound represented by R3bSiX4_b or a partially hydrolyzed condensate thereof (wherein R3 is one of substituted or unsubstituted) a hydrocarbon group; X is a hydrolyzable group; b 1 to 50 parts by mass of 〇·1 to 20 parts by mass (1) is 〇' 1 or 2) (C) is a compound containing a non-aromatic amine group, R 〇) 3-Si-Z-(SiO), rSi -Z -Si-(OR1).^ (wherein R1 is a hydrogen atom or a substituted or unsubstituted one-valent hydrocarbon group; (4) 137.9868 r2 is substituted Or an unsubstituted one-valent hydrocarbon group; Z is an oxygen atom or; 3 is ruthenium, 1 or 2; η is an integer of 10 or more) and the present invention provides a hardened gas loaded with the composition "• Installation of electronic parts Circuit board, silver electrode and silver chip'

[Effects of the Invention] The room temperature hardening type polyoxyxene rubber composition J according to the present invention is at least one copper-silver, other metal part electrical/electronic part seal on the surface of a silver electrode or a silver wafer resistor or the like. It can prevent the corrosion of electrical and electronic parts caused by sulfur-containing gases. A divalent hydrocarbon-based closed circuit breaker. , with the hardening portion, will have a closed condition, [Embodiment of the Invention] < (A) Ingredients>

The composition (A) of the room-temperature hardening type polyoxo rubber of the present invention is represented by the following general formula (1). R2a H2 R2 (1) (wherein R1 is a hydrogen atom, or substituted or unsubstituted R2 is a substituted or unsubstituted one-valent hydrocarbon group; z is an oxygen atom or; a is 0 , 1 or 2; η is an integer of 10 or more). Here, R1 is a hydrogen atom or a carbon number of 1 to 6' especially: or an unsubstituted monovalent hydrocarbon group such as methyl 'ethyl, propyl cyanoethyl, 3 · cyanopropyl, 2-cyano A cyanide hydrocarbon such as butyl or an isopropenyl group. When a is 0 or 1, the monovalent hydrocarbon group is preferably -8·' monovalent hydrocarbon group; the divalent hydrocarbon group is substituted with ~4, etc., the base group, the 2-base group, the allyl group, especially the group A 137.9868

(5) The base and ethyl group are more preferred. When 3 is 2, the gas atom is preferred. Further, R2 is preferably a carbon number of from 1 to 15, especially preferably from 1 to 10, and the group 'ethyl, propyl, isopropyl, butyl '2-ethylbutyl 'octyl, cyclohexyl, cyclopentyl An aralkyl group such as an alkyl group, a vinyl group, an allyl group or the like, a phenyl group, a tolyl group, a xylyl group, a naphthyl group, a biphenyl group, a phenanthryl group, a benzyl group or a phenylethyl group, and further a chloromethyl group. A halogenated hydrocarbon group such as a trichloropropyl fluoride group, a bromophenyl group or a chlorocyclohexyl group; a cyanated hydrocarbon group such as 2-cyanoethyl cyanopropyl group or 2 cyanobutyl group; Methyl, ethyl, trifluoropropyl is preferred, and methyl is more suitable. Z is, for example, an oxygen atom, a methyl group, a methyl group, a propyl group, or the like, and particularly an alkylene group of 1 to 10; wherein, in the oxygen atom, the extension of B, the η in the above formula (1) is 10 or more. The integer, the viscosity of the polyoxyalkylene at 23 ° C is 25 mPa · s or more, preferably 1,000,000 mPa · s, more preferably 5 0 0 ~ 2 0 0, 000 0 m P a · s cold &lt (B) Component> The present invention uses a hydrolyzable group of two or more R3bSiX in one molecule, or a hydrolyzed condensate thereof, and is preferably substituted or unsubstituted as a curing agent, preferably having a carbon number of 1 to 10, More preferably, it is a monovalent hydrocarbon group such as a dilute group or an aryl group of 1 to 8, preferably a methyl group, an ethyl group, a propyl group, a phenyl group or the like. X is a hydrolyzable group, and b is 0, 1, or 2). 'The hydrolyzable group (X) has a ketone oxime group such as a methoxy group, an ethoxy group, a butoxy group 'dimethyl ketone oxime 'methyl ethyl ketone oxime group, and a chain such as a methyl group. The aryl group such as an alkenyl group, a trisyl group, a 3-yl group, and a benzene carbon number group are preferably organic, and have a range of from 100 to δ. η» (R3 is alkyl, amide, B. This is the case of oxooxy-9-(8) (8)

1379868 Metal oxides such as aluminum; metal nitrates such as boron nitride and aluminum nitride; metal carbonates such as magnesium carbonate and zinc carbonate; asbestos, glass, fine powder mica, molten cerium oxide powder, polystyrene, polypropylene, etc. Synthetic resin powder. The amount of these chelating agents is within the scope of the object of the present invention. Further, it is preferred to use such a drying treatment to remove water. <Additive, Adhesive Aid Ingredient> Further, the additive may be added with a polyether agent of a thixotropic enhancer, an antibacterial agent, an adhesion promoter of 7-glycidoxypropyl alkane, and a β-(3,4-ring) Oxycyclohexyl)ethyltrimethoxynonane and the like. Further, the room temperature-hardening type polyoxyxene rubber of the present invention may optionally contain a flame retardant such as a pigment, a dye, an anti-aging agent, an antioxidant, cerium oxide or chlorinated paraffin. <Preparation of Composition, etc.> The room-temperature-hardening polyxanthene rubber composition of the present invention, the (Α) to (C) component, and further the hardening catalyst and the chelating agent additive are uniformly distributed in a dry gas atmosphere The room-temperature-hardening polyxanthene rubber composition of the present invention is mixed and stabilized. When exposed to air, a hydrocarbon-based solvent such as toluene' petroleum ether or a ketone can be added as needed due to moisture. Further, the polyoxyxene rubber composition of the present invention is not a compound; the carbonated cotton, the carbon black polyvinyl chloride, and the epoxy decane composition such as mildew resistant trimethoxy fluorene are preliminarily not damaged. In the case of the agent and the antistatic system, the upper and the above various enamels are sealed. Further, in the case of a diluent such as an ester such as -12-1379868 (9), the viscosity at 23 ° C is preferably 300 Pa·s or less, more preferably 200 Pa·s or less, and most preferably i 〇〇 pa · s or less. 》

The polyoxyethylene rubber composition of the present invention is used for the protection of electrical and electronic parts, and is used by sealing, sealing, coating, etc. of electrical and electronic parts according to a usual method. In this case, 'electrical and electronic parts are preferably formed on at least one part of the surface using metal, especially silver, copper, etc.; for example, electrical/electronic parts are loaded (in this case, electrical and electronic parts can be Mount the board 'silver electrode, silver chip resistor, etc. on the surface without metal parts. [Embodiment] [Examples] The present invention will be specifically described below by way of examples and comparative examples. The invention is not limited to the embodiments. Further, the viscosity of the composition was measured by a rotary viscometer at 23 ° C.

[Examples 1 to 3, Comparative Examples 1 to 4] 100 parts by mass of dimethyl polyoxane which is blocked by a hydroxyl group at both ends of a molecular chain having a viscosity of 700 mPa·s (23 ° C) as component (A) 20 parts by mass of dimethyl polyoxane blocked by methyl groups at both ends of the molecular chain having a viscosity of 300 mPa·s (23 ° C), mixed with a Shinagawa mixer at room temperature for 20 minutes; 8 parts by mass of phenyl tris(isopropenyloxy) decane as component, 1,1,3,3-tetramethyl-2-[3-(trimethoxysartoin)propyl] as a curing catalyst component胍 1 part by mass, and (C) component or as a composition of the ratio -13-(12)1379868. [Table 3] Example 'Comparative Example (C) Ingredients Adding parts by mass Comparative component: Adding parts by mass Example 7 N-2 (aminoethyl) 3-aminopropyltrimethoxydecane: 1 part by mass of Comparative Example 7 pyridine: 1 part by mass

[Comparative Example 8]

The molecular weight chain of the (A) component having a viscosity of 700 mPa·s (23 ° C) at both ends of the molecular chain blocked by a hydroxyl group is 100 parts by mass, and the molecular chain at a viscosity of 300 mPa · s (23 t ) is 20 parts by mass of methyl blocked dimethyl polyoxane, after mixing at room temperature for 20 minutes in a Shinagawa mixer; 8 parts by mass of phenyl bis(isopropenyloxy) decane of component (B), hardening contact 1 part by mass of 1,1,3,3-tetramethyl-2-[3-(trimethoxycarbamidino)propyl]anthracene, mixed in the anhydrous state, followed by defoaming for 2 minutes Mix, ie, modulate into a composition (Table 4). [Table 4] Examples and Comparative Examples (C) Ingredients: Adding Parts by Mass Comparative Example 8 Μ '», <Sturability Test> Curability Test, the above Examples 1 to 7 and Comparative Examples 1 to 8 Each of the compositions prepared in the range of -16 - (13) 1379868 was exposed to ambient conditions of 23 ° C / 5 0 % RH, and the surface of each composition was hardened after 20 minutes. The results are shown in Table 5. 〇: hardening X: not hardened <corrosive test>

The corrosion test was carried out on a silver plated iron plate, and each of the compositions prepared in the above Examples 1 to 7 and Comparative Examples 1 to 8 was applied to have a thickness of 2 mm, and cured to prepare a test sample. The sample and the sulfur powder 〇 2 g were placed in a 100 cc glass bottle at the same time, and the mixture was heated to 80 ° C to be placed, and after 100 hours, the hardened composition was peeled off to visually observe the degree of corrosion of the silver plating. The results are shown in Table 5. ◎: no corrosion 〇: almost no corrosion X: corrosion (blackening)

<Storage Test> The storage property test was carried out by placing each of the compositions prepared in the above Examples 1 to 7 and Comparative Examples 1 to 8 in a 100 cc glass bottle and standing at 23 ° C for 1 〇〇 〇 hours' observation of the separation or separation of constituents of the polyoxo-oxygen composition. The results are shown in Table 5. 〇: no sedimentation. Separation X: sedimentation and separation -17- (14) 1379868 [Table 5] Example Comparative Example 1 2 3 4 5 6 7 1 2 3 4 5 6 7 8 Sclerosing 〇〇〇〇〇〇 〇〇〇〇〇〇〇〇〇 Corrosion test 〇 ◎ ◎ 〇 ◎ ◎ 〇 XXX 〇 X 〇 XX Storage test 〇〇〇〇〇〇〇〇〇〇 X 〇 X 〇〇

From the above results, it was confirmed that the use of the polyoxyethylene rubber composition (Comparative Examples 1 to 3, 5, 7, and 8) in which the (C) component was not added could not prevent the corrosion of the silver plating; The oxygen rubber composition (Comparative Example 4'6) had a reduced storage stability. On the other hand, it was confirmed that the polyoxyethylene rubber composition (Examples 1 to 7) to which the component (C) was added can prevent corrosion by silver plating and has excellent storage stability.

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Claims (1)

1379868 4 Patent application No. 095110952 Revision of the scope of application for Chinese patents Amendment dated September 21, 101 of the Republic of China. Patent application scope 1. The composition of room temperature hardening polysilicone rubber for electrical and electronic parts protection, its characteristics The organic anthracene compound represented by the following formula (1): (10) an organopolysiloxane represented by the following general formula (1): (B) an organic hydrazine compound represented by R3bSiX4_b or a partial hydrolysis condensate thereof (wherein R3 is an unsubstituted a monovalent hydrocarbon group; X is a hydrolyzable group; b is 0, 1 or 2) 1 to 50 parts by mass (C) selected from Ν'-{3-(trimethoxydecyl)-propyl}divinyl three Amine and ginseng (2-aminoethyl)amine containing non-aromatic amine-based compound 0·1~20 parts by mass of R2 R2 【化1】 R2» (1) (R'O)}——Z— (SiOXT-Si —Zr-Si one (OR1) (wherein R1 is a hydrogen atom or an unsubstituted one-valent hydrocarbon group; R2 is a halogen-substituted or cyano-substituted or unsubstituted one-valent hydrocarbon group; Z is an oxygen atom or a divalent hydrocarbon group; a is 0, 1 or 2; η is an integer of 10 or more). 2--mounting circuit board for mounting electrical and electronic parts, characterized by curing of a hardened material of a room-temperature hardening type polyoxymethylene rubber for electrical and electronic parts protection according to the first application of the patent scope 3. A silver electrode characterized by being cured by a hardened material of a room temperature hardening type polyoxymethylene rubber composition for electrical and electronic component protection according to the first application of the patent scope. 1379868 4. A silver wafer resistor characterized by being cured by a hardened material of a room temperature hardening type polyoxymethylene rubber composition for electrical and electronic component protection according to the first aspect of the patent application.